摘要
寨上金矿床属于断裂与褶皱联合控矿。矿区先后经历了区域变形作用、宽缓褶皱变形期、共轴紧闭挤压变形期、韧—脆性非共轴挤压变形期、晚期脆性变形期五个阶段。前三个阶段构造与成矿关系不大,属控岩构造,是后两期成矿构造发育的前提。第四阶段是构造热液成矿阶段(控矿构造),最后阶段形成的构造,对矿体起错断破坏和富集的双重作用。
Zhaishang gold deposit is jointly controlled by faults and folds in structure. Five de- formed phases occurred in the mineralization area, including regional deformation, wide and gentle folds, coaxial closed extrusion, ductile-brittle non-coaxial closed extrusion deformation and late brit- tle deformation, the former three of which are of rock-controlled structure, less relation to ore forma- tion, and the later two formed the premise of mineralization structures. The fourth phase is of tecton- ic hydrothermal mineralization phase （ore-controlled structure）and the last one formed structures that played double functions of faulting and enrichment of ore bodies.
出处
《陕西地质》
2015年第1期9-17,共9页
Geology of Shaanxi
关键词
寨上
构造序列
构造控矿模式
Zhaishang
tectonic series
structural control model
